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首页> 外文会议>Remote Sensing of Clouds and the Atmosphere XII; Proceedings of SPIE-The International Society for Optical Engineering; vol.6745 >Long-term monitoring of the layering of the lower atmosphere in urban environments by ceilometer
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Long-term monitoring of the layering of the lower atmosphere in urban environments by ceilometer

机译：通过云高仪长期监测城市环境中低层大气的分层

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Automatic monitoring of lower atmosphere layering was performed by continuous remote sensing measurements with ceilometer and sodar in Augsburg. The Vaisala ceilometers LD40 and CL31 were used which are eye-safe commercial lidar systems. Special software for these ceilometers provides routine retrievals of lower atmosphere layering from vertical profiles of laser backscatter data. A comparison was performed with parallel monitoring of the layering by acoustic remote sensing (sodar). From the acoustic and optical remote sensing data the following features are analysed. The sodar measurements provide the height of a turbulent layer characterized by high acoustic backscatter intensities due to thermal fluctuations and a high variance of the vertical velocity component. The ceilometer measurements add information about the range-dependent aerosol concentration; gradient minima within this profile mark the borders of mixed layers.Different examples of meteorological conditions will be discussed to demonstrate the possibilities of atmospheric layering retrieval.
机译：通过在奥格斯堡用云高仪和声雷达进行连续的遥感测量，对低层大气层进行自动监测。使用的维萨拉云高仪LD40和CL31是人眼安全的商用激光雷达系统。这些云高仪的专用软件可从激光反向散射数据的垂直剖面中常规检索低层大气层。通过声遥感（声雷达）对层的并行监控进行了比较。从声学和光学遥感数据分析以下特征。声波测量提供了湍流层的高度，其特征在于由于热波动和垂直速度分量的高变化而导致的高声后向散射强度。云高仪的测量结果会添加有关范围相关气溶胶浓度的信息。该剖面内的梯度最小值标志着混合层的边界。将讨论气象条件的不同示例，以证明大气分层检索的可能性。

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